Jell-O is sold prepared (ready to eat) or in powder form, and it is available in many different colors and flavors. The powder contains powdered gelatin and flavorings including sugar or artificial sweeteners. It is dissolved in very hot water, then chilled and allowed to set. Sometimes fruit, vegetables, whipped cream, or other ingredients are added to make often elaborate desserts that can be molded into various shapes. Jell-O must be refrigerated until served, and once set properly, it is normally eaten with a spoon.
There are also non-gelatin pudding and pie filling products under the Jell-O brand. To make pudding, these are cooked on stove top with milk, then either eaten warm or chilled until more firmly set. Jell-O also has an "instant pudding" product which is simply mixed with cold milk and then chilled. To make pie fillings, the same products are simply prepared with less liquid.
Though the word Jell-O is a name brand, it is commonly used in the United States as a generic name for all gelatin products.